MartinLogan ElectroMotion ESL 8" Electrostatic Floor Speakers - Black (Pair) You get a PAIR of MartinLogan ElectroMotion ESL 8-inch Electrostatic Floorstanding Speakers - Black Get minimal distortion and an amazingly nuanced, dynamic sound. The Vojtko crossover seamlessly blends low frequencies from the 8" woofer with the panel's detailed mids and highs. One of MartinLogan's original breakthroughs, CLS (Curvilinear Line Source) technology, has been an essential ingredient of every electrostatic loudspeaker we've produced--and the ElectroMotion ESL is no exception. A precise 8-inch high-excursion, perfectly balanced, audiophile grade, doped fiber cone woofer was custom designed exclusively for The EM-ESL by MartinLogan's in-house engineering team. The custom woofer's rigid light-weight diaphragm eliminates cone flexure and maximizes response time to achieve remarkably low-distortion approaching that of MartinLogan's award-winning electrostatic panel design.